Oliver.



No. 728,143. PATBNTED MAY 12, 1903.

J. H. THOMAS.

OLIVER. APPLICATION FILED AUG. 12. 1902.

H0 MODEL.

THE News PETERS cov. Pnufuumm WhSHINGTON, n, c

UNITED STATES Patented May 12, l 903.

PATENT OFFIC OLIVER.

SPECIFICATION formingpart of Letters Patent No. 728,143, dated May 12,1903. Application filed August 12,1902-' Serial No. 119,423. (No model.)

To all whom, it filial/ 007006771 Be it known that I, JULIAN HUGHTHOMAS, a citizen of Canada, residing at Hamilton, in the Province ofOntario and Dominion of Canada, have invented new and usefulImprovementsin Olivers, of which thefollowing is a specification.

My invention relates to improvements in olivers; and it consists in thepeculiar and advantageous construction hereinafter described, andparticularly pointed out in the permit.- of it being. replaced with ablock of claim appended.

In the accompanying drawings, Figure 1 is a side elevation of theconstruction constituting the preferred embodiment of my invention withthe upper portion of one of the standards broken away. Fig.2 is atransverse section taken on the broken line 2 2 of Fig. 1 with a portionof the hammer-helve broken away, and Fig. 3 is a detail plan with aportion of the hammer-helve broken away.

Similar letters of reference designate corresponding parts in all of theseveral views of the drawings, referring to which- A is the base of myimproved oliver; B B, standards fixed to and risingfrom the base; B B,braces connected to the base and standards; O, a pedal-lever fulcrumedat a on a support I), connected to the base; D, the head, and E thehelve, of a hammer; F, a rock-bar interposed between the standards'andhaving trunnions c at its ends journaled therein;-G, a plate connectedto or for-med integral with the rock-bar, preferably the former, andhaving the outwardly-extending lateral arm at at its forward end; H H,shackles by which the hammer-helve is preferably connected to therocking support formed by the barF and plate G; I, a connectioninterposed between the pedal-lever O and the arm 01 of thehammersupport, and made up, by preference, of a bell-crank lever e,fulcrumed on one of the standards B and having its arms connected by alinkf, a link g connecting the lower arm of lever e and the pedal-leverand a sectional rod h connecting the upper arm of the lever e and thehammer-helve and having its sec tions connected by a turnbuckle, asshown; J, a resilient bar connected at one end to the base A and adaptedto normally rest in the position shown in Fig. 1; K, a coiled springinterposed between and connecting the free portionfof said resilient barand the base A, and L one or more coiled springs interposed between andconnected with .the rear end of the hammer-helve and the forward freeportion of the bar J. The hammer-head D may be of any suitable typewithout involving a departure from the scope of my invention; but-Iprefer to make it of cast-iron and to provide it with a face i of steel,the said face being in the-form of a block and being removably securedin the head, this latter to different shape when desired.

My improved oliver is designed more particularly for useinconjunctionwith an ordinary anvil, and in practice it is placed at oneside of the anvil, so the hammer-head D will strike on the same and sothat the pedallever (3, which is preferably of sufficient length, willextendbeyond'the side of the anvil remote from the standards B; Thisarrangement will obviously enable a mechanic standing at the oppositeside of the anvil with reference to the standards B to operate thehammer and-at the same time conveniently manipulate the work ontheanvil.

, ---The parts of the oliver are shownin their working positions, and itwill be readily observed that when the pedal-lever O is depressed thehammer-head'Dwill be thrown downwardly, also that when pressure isremoved from the pedal lever the hammer head and helve will be quicklyreturned to the position shown in Fig.1 by. the springs connectedtherewith. It will also be observed that when it is not desired to usethe oliver the hammer may be thrown back, so that its head rests aboveand in rear of the vertical median line of the standards B and the rearend of its helve rests between the lowerportions of the standards. Whenthe hammer is thrown back, as described,'the arm at of the plate G willbring up against theuppor end of one of the standards B and'se'rve as astop to limit the backward movement of the hammer. The hammer willremain of itself in the idle position statedy-but it may-be returned toits working position by simply swinging its head forwardly.

In virtue of the free portion of the resilient bar J being connectedwith the base A by the coiled spring K and with the hammer-helve ing ofthe same.

by one or more coiled springs L it will be observed that subsequent to adownward movement of the hammer-head said head will be caused to reboundto a position above or beyond its normal position, so that its ownweight will add to the power of the succeeding blow. It will also beobserved that the resilient bar and the springs connecting the same tothe base and the hammer-helve constitute a very strong and durable meansfor raising the ham mer-head subsequent to down- Ward movements thereof.

I have entered into a detailed description of the construction andrelative arrangement of parts embraced in the present and preferredembodiment of my invention in order to impart a full, clear, and exactunderstand- I do not desire, however, to be understood as confiningmyself to such specific construction and relative arrangement of parts,as such changes or modifications may be made in practice as fairly fallwithin the scope of my invention as claimed.

Having described my invention, What I claim, and desire to secure byLetters Patent, 1s-

In an oliver, the combination of a base,

standards fixed on and rising from the base, a hammer-support interposedbetween the standards, and having trunnions journaled in the same, andalso having a lateral arm on its forward portion, arranged whenthehammer-head is swung rearwardly beyond the vertical plane of thetrunnions, to bring up against the upper end of one of the standards, ahammer-helve arranged on and connected to said support, a pedal-leverfulcrumed on a support rising from the base, a connection between saidlever and the lateral arm of the hammer-support, a resilient barconnected at one end to the base, a coiled spring interposed between andconnecting the free portion of said barand the base, and one or moresprings interposed between and connecting the free portion of said barand the rear portion of the hammer-helve.

'In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

JULIAN HUGH THOMAS.

XVitnesses:

MARY R. BLAINE, W. S. MCBRAYNE.

